metal finishing technical information
METAL FINISHING
Landscape Forms metal outdoor furniture
is finished using Landscape Forms’ exclusive Pangard II® Polyester Powdercoat
System. The Pangard II® multi-step system
of cleaning, priming and powdercoating
produces the finest metal finish available
for site furniture. It provides an attractive,
durable metal finish that
 prevents corrosion
 is extremely hard
 retains sufficient flexibility to resist
cracking and chipping
 is UV stable
 is impact resistant
 has outstanding gloss retention
 has excellent abrasion resistance
 has good chemical resistance
Pangard II® polyester powdercoat is leadfree, hazardous air pollutant (HAPS) free,
does not generate hazardous waste, and
contains less than 1% Volatile Organic
Compounds (VOC’s).
METAL PREPARATION AND CLEANING
Rigorous preparation is key to a successful finish. At Landscape Forms this begins
with brushing, grinding, filing or sandblasting welded parts to remove carbon and
prepare the metal for cleaning and pretreatment.
February 2012
and parts are again cured in an oven.
This heating process cross-links the
coating and fuses it to the prime coat.
The topcoat adds depth to the finish
and provides color and gloss protection.
The average film thickness for most
colors is six mils.
the field, even if the finish is cut or
scraped right down to the metal, the layer
of zinc helps prevent corrosion creep.
EPOXY UNDERCOAT
 An epoxy undercoat (e-coat) is applied
to steel and aluminum products. The ecoat provides strong cohesion to the
zinc substrate pre-treatment with additional protection for the metal and acts
as a moisture barrier between the substrate and the final finish. It penetrates
all crevices, including those not readily
reached by powdercoating, to protect
against corrosion. When reheated during the powdercoating process, it provides a good foundation for adhesion to
the powdercoat.
 The e-coat is oven cured in preparation
for powdercoat applications.
POWDERCOAT FINISH
 E-coated steel and aluminum products
are thoroughly cleaned, rinsed and
dried to remove oils, dust and debris in
preparation for powdercoat.
 Two coats of powdercoat are applied,
with oven curing after each application.
All brackets and connectors are finished
along with product parts to ensure
uniformity of color.
 The topcoat is applied over the primer
Landscape Forms uses the most technologically advanced application equipment
available. The application equipment on
our paint lines provide complete coverage
even in hard-to-reach areas; uniformity of
thickness; and improved charging of
powder particles to achieve optimal
transfer efficiency and limit waste.
The result of this multi-step process is
beautiful, impact-, light-, weather– and
corrosion-resistant furniture that is exceptionally durable and prepared for many
years of active use with minimal maintenance.
Maintenance
The Pangard II® polyester powdercoat finish requires minimal routine maintenance.
Surface dirt may be removed with a brush
or sponge and water mixed with a mild
detergent. High pressure washing (not to
exceed 500psi) with a mild detergent removes stubborn dirt. Steam cleaning is not
recommended.
 Products are cleaned using a heated wash to degrease and remove
surface oils.
 A zinc phosphate pre-treatment is
applied. The zinc finish builds a
structure with good bite and hold for
coating and is highly resistant to
corrosion creep.
 Some aluminum extrusions get a
paintable anodic coating for paint
adhesion and corrosion resistance.
Unlike many site furniture manufacturers
that use an iron phosphate or sandblasting pre-treatment on metal products,
Landscape Forms uses zinc phosphate
because it produces a more durable finish
than either of these two methods. The
sacrificial zinc gives the treated metal
self-healing properties. Under abuse in
MECHANICAL & ENVIRONMENTAL PROPERTIES OF
PANGARD II® POLYESTER POWDERCOAT
Property
Test Method
Color (non-metallic)
CIE L*A*B*
Performance
Delta E 1.0 Max
Gloss Consistency (Gardner 60)
ASTM D-523
+/-5
UV Resistance (Color)
ASTM G155, cycle 7
Delta E <2 @ 2.0 mils
UV Resistance (Gloss)
ASTM G155, cycle 7
<20% loss
Solvent Rub
PT-310.070
10 double
Corrosion Resistance 1500 hr. test
ASTM B 117
Max undercutting 1mm
Cross Hatch Adhesion
ASTM D-3359 method B
100% Pass
Flexibility (conical mandrel)
ASTM D-522
3mm @ 2mils
Erichsen Cupping
ISO 1520
8mm
Impression hardness (Buchholtz)
ISO 2815
95
Direct Impact Test
ASTM D 2794
60 in/lbs @2.5 mils
Reverse Impact Test
ASTM D 2794
60 in/lbs @2.5 mils
Pencil Hardness
ASTM D 3363
2H (min)
Chip Resistance
ASTM D 3170-03
100% pass
Chemical Resistance
ASTM 1308
Humidity Resistance 1500 hr test
ASTM D 2247-87
Max blisters 1mm
Total Durability
LF- Total Durability
Pass @ 1.5, 5, 9.5 mils
7800 East Michigan Avenue, Kalamazoo, MI 49048 P 800.521.2546 F 269.381.3455
www.landscapeforms.com
specify@landscapeforms.com